Bug: Hang on subscripted access to request.subprocess_env.

[Alan Kennedy <mp...@xhaus.com>]

Greetings,

I think the following may be a bug in mod_python. I can't seem to find a 
bug database or tracker for mod_python?

When subscripted access is used to access variable 'SCRIPT_FILENAME' in 
the request.subprocess_env table/mapping, the code hangs.

The following snippet illustrates the problem.

# -=-=-=-=-=-=

def postreadrequesthandler(request):
   request.add_common_vars()
   value = request.subprocess_env['SCRIPT_FILENAME']    # This hangs
# value = request.subprocess_env.get('SCRIPT_FILENAME')# This works
   return apache.OK

# -=-=-=-=-=-=

The strange thing is that the .get() access works fine: only the 
subscript hangs?

The environment is

Apache:     2.0.59
ModPython:  3.2.10
Python:     2.4
OS:         Windows Server 2003

If anyone is wondering about a use-case, I don't actually have one. I 
was just iterating over the contents of the request.subprocess_env using 
a for loop (code below), and found that the code hung when accessing 
'SCRIPT_FILENAME', and not for any other variable.

# -=-=-=
d = {}
for sek in request.subprocess_env.keys():
   d[sek] = request.subprocess_env[sek]
# -=-=-=

Regards,

Alan.

Re: Bug: Hang on subscripted access to request.subprocess_env.

[Jim Gallacher <jp...@jgassociates.ca>]

Alan Kennedy wrote:
> Greetings,
> 
> I think the following may be a bug in mod_python. I can't seem to find a 
> bug database or tracker for mod_python?

http://issues.apache.org/jira/browse/MODPYTHON

No time to investigate right now. I'll take a look tonight.

Jim

> When subscripted access is used to access variable 'SCRIPT_FILENAME' in 
> the request.subprocess_env table/mapping, the code hangs.
> 
> The following snippet illustrates the problem.
> 
> # -=-=-=-=-=-=
> 
> def postreadrequesthandler(request):
>   request.add_common_vars()
>   value = request.subprocess_env['SCRIPT_FILENAME']    # This hangs
> # value = request.subprocess_env.get('SCRIPT_FILENAME')# This works
>   return apache.OK
> 
> # -=-=-=-=-=-=
> 
> The strange thing is that the .get() access works fine: only the 
> subscript hangs?
> 
> The environment is
> 
> Apache:     2.0.59
> ModPython:  3.2.10
> Python:     2.4
> OS:         Windows Server 2003
> 
> If anyone is wondering about a use-case, I don't actually have one. I 
> was just iterating over the contents of the request.subprocess_env using 
> a for loop (code below), and found that the code hung when accessing 
> 'SCRIPT_FILENAME', and not for any other variable.
> 
> # -=-=-=
> d = {}
> for sek in request.subprocess_env.keys():
>   d[sek] = request.subprocess_env[sek]
> # -=-=-=
> 
> Regards,
> 
> Alan.
> 
>